So there was a bit in White Sheep where Tai mentioned Summer and Raven drunkenly making out. The discussions on the forum lead to this.
The old Wizard sipped his freshly brewed tea when his tent flaps opened. "Ah, Miss Branwen," he greeted.
"Wizard, you owe me a favor and I'm calling it in, she stated," she stated.
"Always to the point I see. Ok then, what is it I can help you with Raven?"
"Wizard... give me a dick."
"... wait what?"
"I said give me a dick."
"I think old age is affecting my hearing. Can you repeat that?"
"Give. Me. A. Huge. Big. Long. Meaty. Throbbing. Cock."
"... why?"
Raven thought back to earlier. She and the rest of Team STRQ were drinking alcohol together. They consumed several drinks when Summer had the idea to play the childish game of truth or dare. Then Qrow dared Raven to make out with Summer. A Branwen doesn't back down from a challenge. Qrow and Tai drunkenly cheered while Summer was left in a babbling state. Later during the night, Summer drunkenly jokenely challenged that Raven could be a better lover than Tai or Qrow were.
"Lets just say I don't back down from a challenge, and we leave it at that."
"...ok."
The Wizard wiggled his fingers, emitting a glowing aura.
Raven suddenly felt something new down below and lifted her skirt to see the results.
"One dick as requested. Is that all I can help you with?"
"... Wizard, make it bigger."
-/-
"And that's how you were born."